There is an all-day meeting of the Webb Deep-Sky Society in Cambridge on 27 June at the Institute of Astronomy. Here is a link to the details. http://www.webbdeepsky.com/news/annual-meeting .No booking form so it is just turn up on the day. There is some parking onsite, but also a park and ride very nearby where you can park-only for £1 all day.Regards, Graham